package com.esig.demo;
/**
 * 上下添加数字
 */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.JOptionPane;
import javax.swing.event.*;

public class Spinner extends JFrame{
    private JFrame mainFrame;
    private JLabel headerLabel;
    private JLabel statusLabel;
    private JPanel controlPanel;

    public Spinner() {
        prepareGUI();
    }

    public static void main(String[] args) {
        Spinner Spinner = new Spinner();
        Spinner.showSpinnerDemo();

    }

    private void prepareGUI() {
        mainFrame = new JFrame("Java Swing Examples");
        mainFrame.setSize(400, 400);
        mainFrame.setLayout(new GridLayout(3, 1));
        mainFrame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent windowEvent) {
                System.exit(0);
            }
        });
        headerLabel = new JLabel("", JLabel.CENTER);
        statusLabel = new JLabel("", JLabel.CENTER);
        statusLabel.setSize(350, 100);
        controlPanel = new JPanel();
        controlPanel.setLayout(new FlowLayout());
        mainFrame.add(headerLabel);
        mainFrame.add(controlPanel);
        mainFrame.add(statusLabel);
        mainFrame.setVisible(true);
    }

    private void showSpinnerDemo() {
        headerLabel.setText("Control in action: JSpinner");
        SpinnerModel spinnerModel = new SpinnerNumberModel(10, //initial value
                0, //min
                100, //max
                1);//step
        JSpinner spinner = new JSpinner(spinnerModel);
        spinner.addChangeListener(new ChangeListener() {
            public void stateChanged(ChangeEvent e) {
                statusLabel.setText("Value : " + ((JSpinner) e.getSource()).getValue());
            }
        });
        controlPanel.add(spinner);
        mainFrame.setVisible(true);
    }
}